US2769749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of extracting and purifying acylase
Assignee: Armour and Co
•
Filing: 1953-02-24
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Granted: 1956-11-06
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Expires: 1973-02-24
Abstract
No abstract record available.
Inventors
- 👤 William M Thompson
- 👤 Leonard A Graham
- 👤 Roland J Seidel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:32
CPC Classifications
C; C12; C12N; C12N9/00; C12N9/14; C12N9/78; C12N9/80; Y; Y10; Y10S; Y10S435/00; Y10S435/814; Y10S435/816
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
IN A METHOD OF PREPARING ACYLASE, THE STEPS OF CONTACTING ACYLASE-BEARING KIDNEY TISSUE WITH A MIXTURE OF WATER AND FROM 10 TO 20% BY VOLUME OF A MONOHYDROXY ALKANE HAVING LESS THAN 4 CARBON ATOMS AT PH OF FROM 5.1 TO 7.0 AND TEMPERATURE OF LESS THAN 10* C. TO OBTAIN AN EXTRACT OF ACYLASE, AND SEPARATING THE ACYLASE EXTRACT FROM THE TISSUE RESIDUE.
Claim 2
Dependent Claim
64 words
IN A METHOD OF PREPARING ACYLASE, THE STEPS OF CONTACTING ACYLASE-BEARING KIDNEY TISSUE WITH A MIXTURE OF WATER AND FROM 10 TO 20% BY VOLUME OF A MONOHYDROXY ALKANE HAVING LESS THAN 4 CARBON ATOMS AT PH OF FROM 5.1 TO 7.0 AND TEMPERATURE OF LESS THAN 10* C. TO OBTAIN AN EXTRACT OF ACYLASE, AND SEPARATING THE ACYLASE EXTRACT FROM THE TISSUE RESIDUE.
References Cited (Backward Citations)
US2376841A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-06 | 1960-05-07 | 1960-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-06 | 1964-05-07 | 1964-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-06 | 1968-05-07 | 1968-11-06 | $7700.00 | Window Closed / Lapsed |